LOR3E-R010-D Datasheet, PDF (1/1 Pages) RCD COMPONENTS INC. – PRECISION LOW-OHM METAL PLATE RESISTORS

PRECISION LOW-OHM METAL PLATE RESISTORS
LV3 SERIES - MOLDED 3-WATT
LOR
LOR SERIES - CERAMIC 3- & 5-WATT
RESISTORS CAPACITORS COILS DELAY LINES
RCD LV3
LOR 4T
Ideal for current sense applications
0.0025Ω to .25Ω, 0.5% to 10%
Low TC, high pulse capability
RoHS
Term.W is
RoHS
compliant
& 260°C
compatible
Non-inductive metal element
Available on RCD’s exclusive SWIFT^TM delivery program!
Choice of 2-terminal or 4-terminal designs
OPTIONS
Opt.18: .040” lead dia. on LOR3 (.040” is std on LOR5)
Option 4T: 4 Terminal
Option E: Low thermal emf design
Non-std resistance values, custom marking, burn-in, etc.
← → ^{1.25” Typ}
2nd pair of leads
A
applies to Opt. 4T only
B
↓
↑_d
X
X
← Resis. Measurement Point ^→
(see Applic. Note #1)
B
C
LOR is rectangular,
LV is cylindrical
Series LOR rectangular shape and high thermal conductivity
ceramic case efficiently transfers heat from the internal element
resulting in excellent stability and overload capability. Series LV3
molded design offers improved uniformity for high-volume auto-
placement applications. The resistance element of LOR and LV3
is non-inductive and constructed from near-zero TCR alloy
minimizing thermal instability. Construction is flame retardent,
solvent- and moisture-resistant.
STANDARD RESISTANCE VALUES AND CODES
(Non-standard values available, most popular values listed in bold)
.0025Ω (R0025), .003Ω (R003), .005Ω (R005), .0068Ω(R0068), .0075Ω (R0075),
.0082Ω (R0082), .01Ω (R010 if ≤1%,R01 if ≥2%), .012Ω(R012), .015Ω(R015),
.02Ω (R020 if≤1%, R02 if≥2%), .022Ω (R022), .025Ω (R025), .03Ω (R030 if
≤1%, R03 if ≥2%), .033Ω (R033), .04Ω (R040≤1%, R04≥2%), .05Ω (R050≤1%,
R05≥2%), .068Ω(R068), .07Ω (R070 if ≤1%, R07 if ≥2%), .075Ω (R075),
.08Ω (R080 if≤1%, R08 ≥2%), .1Ω (R100 if≤1%, R10 ≥2%), .15Ω (R150 if
≤1%, R15 ≥2%), .2Ω (R200 if ≤1%, R20 ≥2%), .25Ω (R250 if ≤1%, R25 ≥2%).
RCD
TYPE
WATTAGE CURRENT
@25°C RATING¹
RESISTANCE
RANGE
(OHMS)
RESISTANCE
MEASUREMENT POINT
±.062 [1.6]
A ±.04 [1]
DIMENSIONS
B ±.032 [.8] d ±.002 [.05]
C² ±.032 [.8]
LOR3
3W
25A
.0025 to .25
1.310 [33.3]
.551 [14]
.256 [6.5]
.032 [.8] ³
.075 [1.9]
LOR5
5W
40A
.0025 to .25
1.670 [42.4]
.880 [22.35] .320 [8.13]
.040 [1]
.100 [2.54]
LV3
3W
25A
.005 to 0.1
1.310 [33.3]
.513 [13]
.142 [3.6]
.032 [.8]
n/a
1 _{Max. current is based on I= (P/R)}1/2_{, not to exceed the value listed (increased levels avail).} 2 _{Dim. C applies only to Opt.4T} 3 _{Specify opt.18 for .040 [1mm] lead dia}
PERFORMANCE CHARACTERISTICS
Test Parameter
,
Load Life
Performance, Typ.
0.5% +.5mΩ
Vibration
0.05% +.5mΩ
Overload
Temp. Coefficient
Temp. Range
Dielectric Strength
5 Sec, 5X rated W
(NTE Current Rating)
(per chart, 4wire conn. at body)
-55° to +275°C
1000 VAC
Insulation Res.
10,000MΩ min dry
Terminal Strength
10 lb. min.
Solderability
per Mil-STD-202, m.208
Inductance
5nH to 20nH typ
POWER DERATING
100
75
50
25
0 _{25 50 75 100 125 150 175 200 225 250 275}
Temperature °C
TEMPERATURE COEFFICIENT (typ.)
400
300
LOR3, LV3
250
200
LOR5, LOR3-18
150
100
50
Opt.4T
0
0
10 20 _Res3_is0_tance40_(milli5_o0_hm) 60 70
80 90
APPLICATION NOTES:
1) 3W parts to be measured at 1.31” [33.3mm], 5W parts at 1.67” [42.4mm].
Also available per customer requirement.
2) 18AWG (0.040” dia) leads are standard on LOR5 and available on LOR3
(specify opt. 18). RCD recommends .040” leads, since the heavier gauge
results in lower lead resistance, improved heat transfer, and lower in-circuit
TCR (.032” leadwires have resistivity of ~1mΩ/in., 0.04” dia. have ~0.6mΩ/in).
An extra inch of .032” leadwire in the circuit will increase the TC of a 10mΩ
resistor by roughly 350ppm. Keep leadwires short for best TC stability.
3) To achieve utmost precision in current sense or shunt applications, RCD
offers LOR3 & LOR5 in 4-terminal version, specify opt.4T (eliminates lead
resistance when utilized in Kelvin configuration). Request App. note #R31 for
performance comparison of 2- vs. 4-terminal.
P/N DESIGNATION:
LOR3 - R05 - J B W
RCD Type (LOR3, LOR5, or LV3)
Options: E, 4T, 18 (leave blank if standard)
Resis. Code (see table above):
0.5% & 1%: 3 signif. digits & multiplier; R010=0.01Ω, R150=0.15Ω
2%-10%: use 2 signif.digits & multiplier; R01=.01Ω, R10=.1Ω, etc.
Use extra digits as needed R005, R0025, R0075, R012, etc.
Tolerance Code: D=0.5%, F=1%, G=2%, H=3%, J=5%, K=10%
Packaging: B = bulk (std.),T = Tape & Reel (not avail. on option 4T)
Termination: W= Lead-free, Q= Tin/Lead (leave blank if either is acceptable,
in which case RCD will select based on lowest price and quickest delivery)
RCD Components Inc, 520 E.Industrial Park Dr, Manchester, NH, USA 03109 rcdcomponents.com Tel: [phone] Fax: [phone] Email:[e-mail]
FA049C Sale of this product is in accordance with GF-061. Specifications subject to change without notice.
55